Push B, A, and R to submit the codes below on the match-up screen. The
numbers in the following list indicate the number of times each button is
pressed. After the 1st part of the code has been entered, press the
D-pad in the listed direction to enable it. Example, to enter 1-3-3
Right, press B, A, A, A, R, R, R, Right. You will see a message if you
have entered the code correctly.